warning light AUDI A6 2017 Service Manual

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Coolant temperature
The coolant temperature gauge c::> page 9 must
be observed carefu lly . The coolant temperature
can increase if you drive on long inclines in a low
gear at high engine speeds. Reduce your speed immediately if the LEDs in the top part of the dis­
play turn on.
F or more information about ind icator lights, re­
fer to.
c::> page 14.
A WARNING
Anyone not proper ly restrained in a moving
vehicle is at a much greater risk in an acci­
dent. Never let anyone ride in your car who is
not properly wearing the restraints provided
by Audi.
Trailer towing information
Important to know
Your vehicle handles differently when towing a
tra iler because of the additional weight and dif­
ferent weight distribut ion . Safety, performance
and economy will greatly depend on how careful­
ly you load your trailer and operate your rig.
Before you actually tow your trailer, practice
turning, stopp ing and back ing up in an area away
from traff ic. Keep practicing until you have be­
come completely fam iliar with the way your vehi­
cle-trailer combination behaves and responds.
Backing up is difficult and requires pract ice.
Backing up with a trailer generally requires steer­
ing action opposite to that when backing up your
vehicle without a trailer.
Maintain a greater d istance between your vehicle
and the one in front of you. You w ill need more
r oom to stop. To compensate for the trailer, you
will need a larger than normal turning radius.
When passing, remember that you cannot accel­
erate as fast as you normally wou ld because of
the added load. Make s ure you have enough room
to pass. After passing, a llow plenty of room for
your tra iler before changing lanes again.
Trailer towing
Avoid jerky starts, sharp turns or rapid lane
changes.
(D Tips
- Do not tow a trailer during the break-in peri­
od of your vehicle.
- If you tow a trailer, your Audi may require
more frequent maintenance due to the ex­
tra load
c::> page 259 .
Parking on a slope
Do not pork on a slope with a trailer. If it cannot
be avoided, do so only after doing the following:
When parking:
• Apply the foot brake.
• Have someone place chocks under both the ve­
hicle and the trailer wheels.
• With chocks in place, slowly release the brakes
until the wheel chocks absorb the load.
• Turn the whee ls towards the curb.
• App ly the parking brake.
• Select the P selector lever position.
When restarting after parking:
• App ly the foot brake.
• Start the engine.
• Select the D/S se lector lever position.
• Release the parking brake and slowly pull out
and away from the wheel chocks.
• Stop and have someone retrieve the wheel
chocks.
(D Tips
If you move the selector lever of the automat­
i c transmission to P before applying the park­
i ng brake and before blocking the wheels, you
may have to use more force later to move the
l ever out of the P position.
85

Assist
Assist Speed warning system
Applies to: vehicles with speed warning system
The speed warning system helps you to stay un­
der a specified maximum speed.
The speed warning system warns you if you are
exceeding the maximum speed that you have set.
A warning tone will sound as soon as your speed
exceeds the stored value slightly.
The . (USA models)/ . (Canada models) indi­
cator light and a message appear in the instru­
ment cluster display at the same time. The •
• indicator light and the message turn off if the
speed falls back below the stored maximum
speed .
Setting a threshold is recommended if you would
like to be reminded when you reach a certain
maximum speed. Situations where you may want
to do so include driving in a country with a gener ­
al speed limit or if there is a specified maximum
speed for winter tires.
Setting the warning threshold
The warning threshold is set in the Infotainment
system.
.. Select: the
ICARI function button > (Car)* Sys­
tems
control button > Driver assistance >
Speed warning.
(D Tips
Regardless of the speed warning system, you
should always monitor your speed using the
speedometer and make sure you are following
the legal speed limit.
86
Cruise control system
Switching on
Applies to: vehicles with cruise control system
The cruise control system makes it possible to
drive at a constant speed starting at 20 mph (30
km/h) .
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Fig. 88 Operat ing lever: cruise co ntro l syste m
.,. To switch the cruise control on, pull the lever
into posit ion
(D ~ fig . 88.
.,. Drive at the speed to be maintained .
.,. To store the speed, press the button @.
~ M 0 :i:
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The stored speed and the (ij;\1)~14 (USA models) /
l'I (Canada models) indicator light are disp layed
in the instrument cluster.
This information is also shown briefly in the
Head-up disp lay* .
The speed is maintained by modifying engine
power or through an active brake intervention.
~ WARNING
-Always pay attention to the traffic around
you when the cruise control system is in op­
eration . You are always responsible for your
speed and the distance between your vehi­
cle and other vehicles.
- For safety reasons, cruise control should not be used in the city, in stop-and-go traffic, on
winding roads and when road conditions are poor (such as ice, fog, gravel, heavy rain and
hydroplaning), because this increases the
r isk of an accident.
- Switch the cruise control off temporarily
when dr iv in g in turning lanes, highway exits
or in construction zones.
-

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-Please note that unconsciously "resting"
your foot on the accelerator pedal prevents
the cruise control from braking. This is be­
cause pressing the accelerator pedal over­
rides the cruise control system .
- If a brake system malfunction such as over­
heating occurs when the cruise control sys­
tem is switched on, the braking function in
the system may be switched off. The rest of
the cruise control system functions remain
active as long as the
(tj;(IM@ (USA models) /
ii (Canada models) indicator light is on.
@ Tips
The brake lights turn on when the brakes are
applied automat ically .
Changing speed
Applies to: vehicles with cruise control system
.. To increase or decrease the speed in incre­
ments, tap the lever toward
010 ¢ page 86,
fig. 88 .
.. To increase or decrease the speed quickly, hold
the lever in the
G)/0 direction until the de­
sired speed is displayed.
You can also press the accelerator pedal down to
increase your speed, for example if you want to
pass someone. The speed you set earlier will re­
sume as soon as you release the accelerator ped­
al.
However, if you exceed your saved speed by 5
mph (10 km/h) for longer than 6 minutes, the
cruise control system turns off temporarily .
The green
ltj;(i )~i@ (USA models) 1 '11 (Canada mod­
els) indicator light in the speedometer turns off
and the stored speed is maintained.
Preselecting the speed
App lies to: ve hicles with cru ise control system
You can pre-select your desired speed when the
vehicle is stationary.
.. Switch the ignition on.
.. Pull the lever into position
(D ¢ page 86,
fig. 88 .
Assist
.. To increase or decrease the speed, tap the lever
toward
0 10 .
.. To store the speed displayed, release the lever.
T his function makes it possible, for example, to
save the speed you want before driving on the
highway. Once on the highway, activate the
cruise control by pulling the lever toward @.
Switching off
Appl ies to : vehicles with cruise co ntrol system
Temporary deactivation
.. Press the brake pedal, or
.. Press the lever into position @ (not clicked into
place)
¢ page 86, fig. 88, or
.. Drive for longer than 5 minutes faster than 5
mph (10 km/h) above the stored speed .
Switching off completely
.. Press the lever into position @(clicked into
place), or
.. Switch the ignition off.
The speed you stored will be maintained if the cruise control has been switched off temporarily .
To resume the stored speed, release the brake pedal and pull the lever to position@.
Switching the ignition off will erase the stored
speed .
A WARNING
--You should only resume the stored speed if it
i s not too high for existing traff ic conditions.
Otherw ise you can inc rease the risk of an acci­
dent.
87

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~-- -~ -Di st a nce 3: this setting corresponds
to a distance of 164
ft (SO m) when traveling at
62 mph (100 km/h), for examp le (time between:
1.8 seconds).
~ -- --~ Dist a nce 4: This setting corresponds
to a distance of 210
ft (64 m) when traveling at
62 mph (100 km/h), (time distance of 2.3 sec­
onds).
A WARNING
Following other vehicles too closely increases
the risk of coll isions and ser ious personal in­
jury.
- Setting short distances to the traffic ahead
reduces the t ime and distance available to
br ing your vehicle to a safe stop and makes
it even mo re necessary to pay close atten­
t ion to traffic.
- Always obey applicable traffic laws, use
good j udgment, and select a safe following
distance for the traffic, road and weather
condit ions .
@ Tips
- Di stance
3 is set automatically each time
you switch the ignition on.
- Your settings are automatically stored and
assigned to the remote control key being
used.
Selecting the dr iving mode
Applies to: vehicles with Audi adaptive cruise control
.,. Se lect the des ired driving mode in dr ive se lect
~ page 104.
@ Tips
Your se ttings a re au toma tic al ly s to red and as­
signed to the remote contro l key being used.
A ss ist
Request for driv er interv ent ion
Applies to: vehicles with Audi adaptive cruise control
F ig. 98 Instrument c luster: request for driver intervention
In certain situations, the system will request you
to take action:
- if the braking from the adaptive cruise control
system is not enough to maintain enough dis­
tance to the object ahead.
T he danger is indicated by the. indicator light
~ fig. 98. An aud io signa l will also sound.
- Press the brake pedal to slow your vehicle down.
Audi braking guard
Applies to: vehicles with Audi adaptive cruise control
Fig . 99 Instrument cluste r: approac h warning
The braking guard uses radar sensors and a v ideo
camera. It also f unctions w ith in t he lim its of the
system when adaptive cru ise control is switched
off.
What can the b raking guard d o?
When detected in time, the system can assess
dange rous situations where an object ahead
brakes sudden ly or if yo ur own vehicle is trave ling
at a high speed and approaching an object that is
II>
93

Assist
moving more slowly. The braking guard does not
react if it cannot detect the situation.
The system advises you of various dangerous sit­
uations:
- The
distance warning occurs if you drive too
closely to the object ahead for a long period of
time . If the object ahead brakes strongly, you
would not be able to avoid a collision. The.
indicator light appears as an indication for this.
- The
approach warning occurs when an object
ahead is traveling more slowly or brakes
strongly . When this warning occurs, it may only
be possible to avoid a collision by swerving or
braking strongly. The danger is indicated by the
• indicator light ¢
fig. 99. An aud io signa l will
also sound.
If you do not react early enough or at all to a dan­
gerous situation, the braking guard supports you
with a braking intervention.
- If a collision is imminent, the system will first
provide an
acute warning by braking sharply.
- If you do not react to the acute warning, the
braking guard can increase the braking force
within the limits of the system
1l. Th is reduces
the vehicle speed in the event of a co llision.
- The system can initiate complete deceleration
shortly before a collision
ll. Full deceleration at
high speeds occurs only in vehicles with adap­
tive cruise control and s ide assist (pre sense
plus).
- If the braking guard determines that you are
not braking strongly enough when there is an
impen ding collision, it can increase the braking
force .
- The pre sense functions also engage when
there is an impending collision
¢ page 137.
Which functions can be controlled?
You can switch the braking guard and the dis­
tance/approach warning on or off in the Infotain­
ment system ¢
page 95, Settings in the Info­
tainment system.
l) This is not availab le in some co untr ies.
94
A WARNING ,_
Lack of attention can cause collisions, other
accidents and serious personal injuries. The
braking guard is an assist system and cannot
prevent a collision by itself . The driver must
always intervene. The driver is always respon­
sible for braking at the correct time.
- Always pay close attention to traffic, even
when the braking guard is switched on. Be
ready to intervene and be ready to take
complete control whenever necessary. Al­
ways keep the safe and legal distance be­
tween your vehicle and vehicles up ahead.
- Braking guard works within limits and will
not respond outside the system limits, for
example when approaching a stopped vehi­
cle or stationary obstacle (end of a traffic
jam or vehicle that has broken down in traf­
fic).
- Always remember that the radar sensor for
the braking guard works only within defined
detection and range limits that may prevent
the proper detection of other vehicles.
- The radar sensor's function and range can
be reduced by rain, snow and heavy spray.
Moving vehicles up ahead may not be
promptly detected or may not be detected
at all.
- Reflective surfaces including crash barriers
or tunnel entrances may impair the function
of the radar sensor.
(D Tips
-You can cancel the braking with increasing
force that is initiated by the system by brak­
ing yourself, by accelerating noticeably or
by swerving.
- Keep in mind that braking guard can brake
unexpectedly. Always secure any cargo or
objects that you are transporting to reduce
t he risk of damage or injury.

Ass is t
D oor open
The adaptive c ruise contro l system cannot sw itch
on when a door is open.
Stat ionar y obj ect ah ead
This message appears if you would like to switch
adapt ive cruise control on and there is a station­
ary object or obstacle directly ahead of your vehi­
cle .
Audi active Lane assist
Description
Appl ies to: ve hicles w ith Audi active lane assist
Active lane assist detects lane marker lines with­
in the limits of the system using a camera in the
windshield. If you are approaching a detected lane marker line and it appears likely that you
will leave the lane, the system will warn you with
correct ive steering . You can ove rride th is steer ing
at any time . If you pass over a line, the steer ing
wheel will v ibrate l ightly. In order for this warn­
ing vib ration to occur, it must fi rst be sw itched
on in the Infotainment sys tem . Active lane assist
is ready for operation when the lane marker line
is detected on at least one side of the vehicle .
The system is designed for driving on express­
ways and highways and therefore only activates
at speeds above approximately 40 mph (65 km/
h).
A pp lies to: ve hicles w ith s ide assist
If you activate a turn sig na l when active lane as­
sist is ready and it classifies a lane change as crit­
ical because of vehicles traveling alongside you or
approaching you, there will be noticeab le correc­
tive steering shortly before you leave the lane.
This will attempt to keep your vehicle in the lane.
A ppl ies to: ve hicles w ithout s ide ass ist
The system will not warn you before crossing a
lane marker line if yo u have activated the tu rn
signa l. In this case, it ass umes that you are
changing lanes intentiona lly .
A ppl ies to: ve hicles with adaptive cruise co ntrol
The corrective stee ring is targeted based on the
driving situat ion . In addition to the lane marker
96
li nes, the system can a lso take into account other
objects such as guard rails. If they are detected in close prox imity to the ve hicle, active lane assist
helps prevent the vehicle from dr iving too close
to them. There is a lso pass ing ass istance. The
system does not provide any corrective steering if i t detects that you are pass ing another vehicle .
A WARNING
-The system warns the drive r that the vehicle
is leaving the lane using cor rect ive steering.
The drive r is always responsible fo r keeping
the vehicle within the lane.
- The system can help you keep the vehicle in
the lane, but it does not drive by itse lf. Al­
ways keep your hands on the steering
wheel.
- Cor rective steering m ay no t occur in certain
si tuations, such as during heavy braking.
- There may be cases where t he camera does
not recognize all lane marker lines . Correc ­
tive steering can only take place on the s ide
of the vehicle where lane marker lines are
detected.
- Other road structures or objects could possi­
bly be identified unintent ionally as lane
marker lines. As a result, corrective steering
may be unexpected or may not occur.
- The camera view can be restricted, for ex­
ample by vehicles driving ahead or by rain,
snow, heavy spray or light shining into the
camera . This can result in active lane ass ist
not detecting the lane marker lines or de­
tect ing them inco rrectly .
- Under certain cond it ions such as ruts in the
road, a banked roadway or crosswinds, the
corrective steer ing alone may not be enough
to keep the vehicle in the m iddle of the lane.
- For safety reasons, act ive la ne assist must
no t be use d when there are poor road and/
or weather condi tions such as slippery
roads, fog, gravel, heavy rain, snow and the potential for hydrop laning. Using active lane
assist under these conditions may increase
the risk of a crash.

Switching on/off
A ppl ies to: ve hicles with Audi active lane assist
Fig. 100 Turn s ig n al lever: button for active lane ass ist
F ig. 101 Windsh ield: camera window fo r ac tive lane assist
... Press the button to switch the system on and
off ¢fig . 100 . The. or. indicator light in
the instrument cluster turns on o r off .
Indicator lights
• Ready: the indicator light turns on when the
system is ready for use. The system can now be
operated .
., Not ready: the indicator light turns on if the
system is switched on but is inoperab le. Th is may
be due to the following reasons:
- The re is no lane marker line.
- T he relevan t lane marker lines are not detected
(for example, mark ings in a construction zone
or because they are obstructed by snow, dirt,
water or lighting).
- The vehicle speed is below the activation speed
of approx imately 40 mph (65 km/h) .
- The lane is too narrow or too wide.
- The curve is too narrow.
co ~ - The driver's hands are not on the stee ring
~ wheel. N .... 0 0 <.,;) 'SI"
Assist
(D Tips
Make sure the camera's field of view
¢ fig. 101 is not obstructed by stickers or any­
thing else. For information on clean ing, refer
to
¢page 231.
View in instrument cluster display
App lies to: vehicles with Audi a ctive la ne ass ist
Fig. 102 Instrument cluster: active lane ass ist is sw itc hed
on and providing warnings
Fig. 103 Instrument cluste r: act ive lane ass ist is sw itc hed
on b ut not ready to provide warnings
You can call up the active lane assist display us­
ing the b uttons in the mu ltifunction steering
wheel
¢ page 21 .
An additional indicato r appears i n the Head-up
display*.
White line(s) Active lane assist is act ivated
and ready to provide warn ings .
Red line(s) Active lane assist warns you
(left or right) before leav ing a lane
¢fig . 102. In addition, the
steering wheel vibrates lightly.
Gray line(s) Active lane assist is activated,
but not ready to give warning
¢fig. 103 .
97

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Adjusting the display brightness
Applies to: vehicl es with Audi side assist
The display brightness can be adjusted in the In­
fotainment system.
.. Se lect: the ICARI function button > ( Car )* Sys ­
tems
control button > Driver ass istance > Audi
side a ssist .
The display brightness ad justs automat ica lly to
the br ightness of the surroundings, bot h in the
i n formation and in the warning stage . In very
dark or very bright sur roundi ngs, the automatic
ad ju stment will set t he d isp lay to the m inimum
or maxim um level. In such cases, you may no tice
no change when adjus ting the brightness, o r the
change may only be no tic eable once the s ur­
ro undings change .
Ad just the b rig htness to a level where the d isp lay
i n the inform ation stage wi ll no t dis rup t your
view ahead. If you change the bright ness, the dis­
p lay in the ex terior mir ror will brief ly show the
b rightness level in the information stage . The
b rightness of the warning stage is linked to the
brightness in the informat ion stage and is ad just­
ed along with the information stage.
(D Tips
- Side assist is not active wh ile you are ma k­
i ng the ad justment.
- Your settings are automatically stored and
ass igned to the remote control key being
u sed.
Messages
App lies to: vehicl es with Audi side assist
If side ass ist switches off by itself, the LED in the
button turns off and a message will appear in the
i nstr ument cluster d isp lay :
Audi side assist: Currently unavailable . No
sensor vision
The rada r senso r vis io n i s impa ired . Do not cove r
the area in front of the senso rs with bike wheels ,
sticke rs, dirt o r othe r objects . Clean t he a rea in
fr on t of the senso rs , if necess ary
c> page 99,
fig. 107 .
Assist
Audi side assist: Currently unavailable
S id e assist c annot be sw itched on at this time be­
ca use there is a ma lfunction (for example, the
batte ry c harge leve l may be too low).
Audi side assist: System fault!
T he system cannot gua rantee that it will detect
vehicles cor rect ly a nd i t has switc hed off. The
senso rs have been moved or are f aulty. Have the
system checked by an au thorized Aud i dea ler or
authorized Audi Serv ice Facility soon.
Audi side assist: Unavailable when towing
S ide ass ist swit ches off automatically when a fac­
tory- inst alled tra ile r hi tch is con nected to the
elect rica l connec tor on the t rai ler . There is no
guarantee the system will switch off when using
a retrofitted trailer hitch. Do not use side assist
when towing a trai ler.
Night vision assist with
pedestrian and wild
animal detection
Description
Applies to : vehicles with night vision assist
The night vision assist can detect, highlight and,
if necessary, warn about pedestrians and large wild animals.
Night v ision assist w it h pedestrian and w ild a ni­
mal detection assists you at nig ht by using an in­
frared camera to monitor the a rea in front of
your vehicle, within t he limits of the system. It
can d isplay objects up to a distance of approxi ­
mately 1000 feet (300 m) . The thermal image
de tected by the camera is show n in the inst ru­
me nt cl uster d is pla y. Wa rm areas appear lighter
and co ld areas appear da rker.
101

Ass is t
Highlighting detected pedestrians and wild
animals
A pplies to: ve hicles w ith night vi sion ass ist
F ig. 109 Instrument cluster: yellow highl ighted pedes ­
trians
F ig. 110 Instrument cluster: symbol when the infrared im­
age is not vi sible
With in the limits of the system, the night vision
assist can detect pedestria ns and w ild an imals
that are between approximately 32 ft (10 m) and 295
ft (90 m) in front of the vehicle and within
the detection zone . Within the limits of the sys ­
tem
q poge 103, a pedestrian or wild an imal de­
tected when the low beams are switched on is
highlighted in yellow
q fig. 109. Animal recogni­
tion is not active with in h ighly developed areas.
The system only detects large wild animals such
as deer.
@ Tips
If another display such as navigation replaces
the image from the night v is ion assist the~,,
symbo l appears in a tab
q fig . 110 . You can
access n ight vision assist using the multifunc­
tion steering wheel buttons
q page 22.
102
Pedestrian and wild animal warning
App lies to : vehicles wit h night vision assis t
Fig. 111 Instrument cluster: @ pedest rian warning, @
wild anim al warn ing
Fig . 112 Instr ument clus ter: @pedestria n warning/ @
wild animal warning, when the nigh t vision ass ist im age is
not selected in the instru ment cluster display
Image in the instrument cluster /head-up
di spl ay *
If there are pedestrians or wild an imals in an
area in front of your vehicle that is classified as
cr itical, the system will direct your attention to
th is:
- Pedestrians or wild anima ls are highlighted in
red and the corresponding symbol. or.
turnson ~fig.111 .
- There is also an audible signal.
The area classified as critical is based on the veh i­
cle speed and the steeri ng wheel angle . Pedes­
trian and wild animal warning enco urages you to
pay more attention.
If the night vision assist image is rep laced by an­
othe r d isplay (such as the on-board compute r),
the red. or. in dicator light~
fig. 112 will
appear if there is a pedestrian or wild anima l
warning.

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If the head-up display* is switched on and the
night vision assist content is activated,. or.
will appear in the head-up display*.
Marking light*
To direct the driver's attention to a pedestrian,
the headlights can flash on the pedestrian three
times in a row when there is a pedestrian warn­
ing.
This occurs at speeds above approximately 35 mph (60 km/h) if you are outside of illuminat­
ed areas and no detected vehicles are shown. The
high beam assistant* controls the marking light*
c::> page 42, High beam assistant .
The marking light is not used for wild animals.
General information
Applies to: vehicles with night vision assist
Fig. 113 Front of the vehicle: night vision ass istant came ra
The following situations may affect the function
of the night vision assist system:
- Poor visibility such as snow, rain, fog or heavy spray
- Dirty lens on the night vision assist camera
Make sure the night vision assist camera
c::> fig. 113 is not covered by stickers, deposits or
any other obstructions because that can affect
the camera function . For information on clean­
ing, refer to
c::> page 231 .
The pedestrian and wild animal recogn it ion de­
pends on the temperature difference between
the person/wild animal and the background . Peo ­
ple/wild animals may not be detected if the dif­
ference is too small. The pedestrian/wild animal marking and the marking light* deactivate at
Assist
temperatures above approximately 77 °F (25 °C)
and during daylight.
If the night vision assist im­
age is selected in the instrument cluster display,
then the
II symbol appears at the top on the
right side.
A WARNING
-Pay attention to traffic and the area around
your vehicle when night vision assist is switch­
ed on. The driver is always responsible for as­
sessing the traffic situation.
- Night vision assist can only warn about peo­
ple and wild animals located within the visu­
al range of the infrared camera. The visual
range corresponds to the image in the in­
strument cluster display.
- Night vision assist may not detect people or
wild animals and mark them if
- they are not in an upright position, for ex­
amp le if they are sitting or lying down
and/or
- the silhouette in the display appears in­
complete or interrupted, for example be­
cause the person is partially covered by a
vehicle or an animal by tall grass. This
could increase the risk of an accident.
- Never try to swerve around animals if doing
so will endanger you or other road users, be­
cause this increases the risk of an accident.
(l'} Tips
-Even though the system evaluates the
shape and heat given
off by all detected ob­
jects, there are limits to the system . There
may be false warnings.
- For technical reasons, the image pauses in
split second intervals.
-
103